LMH6526SPX/NOPB

Laser Drivers Overview

The LMH6526SPX/NOPB is a four-channel laser diode driver with dual outputs, designed for combination DVD/CD recordable and rewritable systems. It features two high-current outputs for reading and writing DVD (650 nm) and CD (780 nm) lasers. The device supports read, write, and erase functions through four separate switched current channels. Channel currents are summed at the selected output to generate multi-level waveforms. It includes a 150 mA read channel, one 300 mA write channel, and two 150 mA write channels, allowing a total output current of 600 mA or greater. The part operates within a supply voltage range of 4.5 V to 5.5 V and an operating temperature range of -40°C to +85°C.

Laser Drivers Feature Summary

• Integrates four independent current channels for precise control of optical disc operations including read, write, and erase functions.
• Features an on-board High-Frequency Modulator oscillator to reduce low-frequency noise in laser diodes.
• Utilizes an LVDS interface to deliver high-speed data transmission while minimizing noise and crosstalk.
• Supports summation of multiple channel currents to achieve high total output drive capabilities.

Laser Drivers Applications

• DVD recordable and rewritable drives
• CD recordable and rewritable drives
• Combination DVD/CD optical storage systems

Laser Drivers Procurement Notes

Verify the specific suffix 'SPX' against official Texas Instruments documentation to confirm package type and tape-and-reel specifications. Ensure compatibility with system requirements for LVDS signaling levels and thermal management within the specified operating temperature range. Cross-reference datasheet revisions for any updates to electrical characteristics or pin configurations.

Laser Drivers Selection Notes

Select this component when designing optical drives requiring integrated multi-channel laser control with high-speed modulation capabilities. Consider the device's ability to sum currents for higher power applications and its built-in noise reduction features. Evaluate the LVDS interface compatibility with the host controller and ensure the thermal performance meets the enclosure constraints.

Laser Drivers Part Context

The LMH6526 belongs to the LMH65xx series of laser drivers from Texas Instruments. It is functionally related to the LMH6525, differing primarily in oscillator enable configuration. The SPX variant typically denotes a specific package and shipping option within the UQFN family. This series is optimized for speed and power consumption in next-generation optical storage systems.

Laser Drivers Replacement Considerations

The LMH6525SPX/NOPB is a functional substitute within the same family, sharing identical pinouts and core functionality. Differences lie in the oscillator enable mechanism; verify that the system design accommodates the LMH6525's specific ENOSC pin requirements before substitution.